JP7523965B2 - Driving tools - Google Patents

Description

The present invention relates to a driving tool for driving nails, staples, etc., into wood, etc.

The driving tool has an impact mechanism that ejects the driving tools. The driving tools are supplied to a driving passage provided ahead of the impact mechanism in the driving direction. A magazine loaded with multiple driving tools is connected to the side of the driving passage. The driving tools are automatically supplied one by one from the magazine to the driving passage in conjunction with the drive of the impact mechanism. The driving tools are ejected by the impact mechanism from an ejection section ahead of the driving passage in the driving direction. This allows the driving tools to be driven into wood, etc.

In order to improve the visibility of the place where the driving tool is driven, a driving tool has been provided in which a light illuminates the ejection part and its surroundings. The driving tool disclosed in Patent Document 1 has a light in front of the magazine in the driving direction. A battery is attached to the main body of the driving tool as a power source. Wiring is arranged inside the main body and on the side of the magazine to electrically connect the battery to the light. When wiring along the side of the magazine, it is necessary to cover and protect the wiring to prevent breakage, etc. This makes the magazine structure complicated and increases the number of assembly steps. Moreover, the magazine has a door that can be opened and closed relative to the box-shaped magazine body. Therefore, it is necessary to avoid wiring the door and its vicinity. Therefore, wiring along the side of the magazine body is usually difficult.

The driving tool disclosed in Patent Document 2 has lighting on the front side of the main body, which is located behind the magazine in the driving direction. The lighting illuminates the ejection part and its surroundings from behind the magazine in the driving direction. The lighting is powered by a battery attached to the opposite side of the main body.

JP 2009-202287 A JP 2012-166309 A

However, when illuminating the ejection part from behind the magazine in the driving direction, the magazine gets in the way and shadows tend to form around the ejection part. This makes it difficult to adequately illuminate the area around the ejection part. On the other hand, when installing lighting in a position that can reduce the shadows that form around the ejection part, the wiring from the power source to the lighting becomes complicated and assembly is not easy. Therefore, there has been a need for an ejection tool that is easy to assemble and can adequately illuminate the area around the ejection part.

In one feature of the present disclosure, the driving tool has a striking mechanism that strikes the driving tool, and a main body portion equipped with the striking mechanism. The driving tool further has an ejection portion from which the driving tool struck by the striking mechanism is ejected. A lighting device is provided on the main body portion. A light-guiding material is provided in the area from the lighting device to the ejection portion.

Therefore, the wiring that supplies power to the lighting fixture can be conveniently arranged in the main body. This makes it easy to assemble the lighting fixture and wiring to the main body. Furthermore, the light emitted by the lighting fixture is guided to the vicinity of the emission part by the light-guiding material. This allows the light to be widely irradiated from the tip of the light-guiding material to the area around the emission part. Furthermore, it is possible to prevent light diffusion and reduction in the amount of light in the area from the lighting fixture to the emission part.

In another feature, the driving tool has a magazine that supplies driving tools to the striking mechanism. The lighting device is provided in front of the main body in the driving direction. The light-guiding material is provided in the magazine. Therefore, the light-guiding material can connect the light source of the lighting device to the emission part via the shortest route or a substantially shortest route. This reduces the loss of light that reaches the emission part.

In another feature, the magazine is a box shape extending in the driving direction and in a direction perpendicular to the driving direction. The magazine has a magazine body that contains the driving tools, and a door that is provided so as to be able to open and close relative to the magazine body. The light-guiding material is provided on the door. For example, a user holding the driving tool in his/her right hand looks at the place where the driving tool will be driven from the left to the right of the driving tool. The door is provided on the left side of the magazine body, taking into consideration that the driving tool will be held in the right hand. Therefore, the light that passes through the light-guiding material irradiates the periphery of the emission part from the left to the right. Therefore, the user's line of sight and the irradiation direction of the light are generally the same direction. This improves the visibility of the place where the driving tool will be driven into the material to be driven.

In another feature, the magazine is box-shaped and extends in the driving direction and in a direction perpendicular to the driving direction. The magazine has a magazine body that houses the driving tools, and a door that is provided so as to be openable and closable relative to the magazine body. The light-guiding material is provided in the magazine body. The light-guiding material is therefore provided in the magazine body that is fixed to the main body. This stabilizes the position of the light-guiding material relative to the main body. This stabilizes the irradiation direction of the light irradiated from the tip of the light-guiding material.

In another feature, the light-guiding material extends along the outer periphery of the magazine that supplies the driving tools to the striking mechanism. The light-guiding material is therefore adjacent to the outer periphery of the magazine in a long region along the extension direction. This allows the light-guiding material to be stably supported by the magazine. This stabilizes the direction of light emitted from the lighting device through the light-guiding material.

In another feature, the light guide is formed as a single part with at least a part of the magazine. This reduces the number of parts and the number of assembly steps. Also, there is no need to attach mounting parts around the light guide. This allows the area around the light guide to be compact.

In another feature, the light-guiding material has an irradiation section at its tip in the forward direction of irradiation. The irradiation section has an inclined surface that is inclined so that the direction perpendicular to the surface faces the emission section. Therefore, light is emitted from the irradiation section in the direction perpendicular to the inclined surface. Therefore, the light is concentrated and emitted near the emission section. This improves the irradiation efficiency of the emission section.

In another feature, the driving tool has a battery attachment section to which a battery can be attached and detached as a power source for the impact mechanism. The lighting device is powered by the battery. Therefore, the battery for operating the impact mechanism can be used as a power source without providing a separate power source for the lighting device.

In another feature, the illumination of the lighting device is automatically switched on and off in conjunction with the driving of the impact mechanism. Therefore, the lighting device automatically turns on, for example, before the driving tool is driven into the hole, and turns off after the driving tool is driven into the hole. This allows the user to use the driving tool without having to switch the lighting device between on and off. This improves the operability of the driving tool.

FIG. 1 is a perspective view of a driving tool according to a first embodiment. FIG. 2 is a perspective view of the driving tool when the magazine is in an open state. FIG. FIG. 5 is a vertical cross-sectional view of the driving tool, taken along line VV in FIG. 4. FIG. 2 is a perspective view of the driving tool as seen from the left rear. FIG. 2 is a perspective view of the driving tool as seen from the rear right side. FIG. 11 is a perspective view of a driving tool according to a second embodiment, as viewed from the rear right side. FIG. 11 is a perspective view of a driving tool according to a second embodiment, as viewed from the left rear. FIG. 2 is a perspective view of a driving tool according to a first comparative example. FIG. 11 is a perspective view of a driving tool according to a second comparative example.

A driving tool 1 according to a first embodiment of the present disclosure will be described with reference to Figs. 1 to 7. As shown in Fig. 1, in this embodiment, the driving tool 1 is exemplified by a mechanical spring type, rechargeable finishing nail driver also known as a pin tacker. The driving tool 1 uses the biasing force of a compression coil spring as a striking force (driving force) for driving the driving tool T into the workpiece W (see Fig. 5). In the following description, the driving direction of the driving tool T is the front side and the opposite driving direction is the rear side, and the left and right directions are based on the user.

As shown in FIG. 1, the driving tool 1 has a main body 10 that is covered with a main body housing 11. A motor housing 12 is provided at the front of the main body 10 and extends downward. The motor housing 12 houses an electric motor 13 as a drive source. A grip 16 that is held by a user is provided at the rear of the main body 10 and extends downward. The motor housing 12 and the grip 16 extend approximately parallel to each other. A power supply 20 is provided between the lower part of the motor housing 12 and the lower part of the grip 16, extending in the front-rear direction. Therefore, the main body housing 11, the motor housing 12, the power supply 20, and the grip 16 form a loop shape.

As shown in FIG. 5, the front of the main body 10 is provided with a driving nose 2 that guides the impact driver 3 in the driving direction. The driving nose 2 has a driving passage 2a that extends in the front-to-rear direction. The front end of the driving nose 2 is provided with an ejection section 4. An ejection port 4a that communicates with the driving passage 2a opens at the front end of the ejection section 4. As the impact driver 3 advances through the driving passage 2a, the driving tool T is struck and ejected from the ejection port 4a. One driving tool T ejected from the ejection port 4a is driven into the workpiece W.

The driving nose section 2 shown in FIG. 5 is provided so that it can be displaced within a certain range in the forward and backward directions relative to the main housing 11. Driving operation is only performed when the injection section 4 is pressed against the material W to be driven and the driving nose section 2 is retracted relative to the main body section 10. For this reason, the driving nose section 2 also functions as a contact arm that is operated to allow the driving operation. An operating arm section 5 is connected to the rear section of the driving nose section 2 that faces the front section of the main housing 11. The operating arm section 5 displaces forward and backward together with the driving nose section 2.

As shown in FIG. 5, a microswitch 6 is disposed behind the operating arm 5 and in front of the main housing 11. When the driving nose 2 retracts relative to the main housing 11, the microswitch 6 is pressed by the operating arm 5 and turned on. The driving operation is performed under the condition that the microswitch 6 for detecting the on operation is in the on state. A microswitch 7 for detecting the retraction end position of the impact driver 3 is disposed at the rear of the main housing 11. The microswitch 7 for detecting the retraction end will be described later.

As shown in Figs. 1 and 5, a magazine 51 is connected to the driving nose section 2. The magazine 51 is a box-shaped rectangle that extends vertically and in the driving direction. The magazine 51 extends downward from the underside of the driving nose section 2 along the front side of the motor housing section 12. The magazine 51 can be loaded with a plate-shaped connecting tool in which multiple driving tools T are temporarily fixed in parallel to each other. The magazine 51 is a rectangular shape that can store the connecting tools stretched out in a flat plate shape in the vertical direction, and is a so-called straight type magazine. The loaded connecting tools are pitch-fed toward the driving nose section 2 in conjunction with the driving operation of the main body section 10. This allows the driving tools T to be supplied one by one into the driving passage 2a. Details of the magazine 51 will be described later.

As shown in FIG. 5, a trigger-type switch lever 17 is provided on the upper front part of the grip part 16. That is, the switch lever 17 is provided inside the loop shape formed by the main body housing 11, the motor storage part 12, the power supply part 20, and the grip part 16. The grip part 16 has a switch main body 18 built in behind the switch lever 17. With the driving nose part 2 retracted to the ON position (microswitch 6 is ON), the switch lever 17 is pulled with the fingertips of the hand holding the grip part 16. This turns on the switch main body 18 and starts the electric motor 13. When the pulling operation of the switch lever 17 is stopped, the switch main body 18 turns off. The electric motor 13 automatically stops after the switch main body 18 turns off, or even if the switch lever 17 is still pulled, after the driver base part 42 described later is returned to the retracted end (initial position).

As shown in FIG. 5, a battery attachment section 21 is provided on the underside of the power supply section 20. One battery pack 22 is attached to the battery attachment section 21. The battery pack 22 mainly supplies power as a power source for the electric motor 13. Although not shown in detail in the figure, the battery attachment section 21 is provided with a pair of left and right rails for mechanically connecting the battery pack 22, and positive and negative terminal boards for electrical connection. A controller 23 containing a control circuit board and a power circuit board for controlling the operation of the electric motor 13 is housed inside the battery attachment section 21.

The battery pack 22 shown in FIG. 1 is a lithium-ion battery with an output voltage of 18 V. The battery pack 22 is of a slide-mount type that can be removed by sliding backward from the battery mounting section 21 and can be attached by sliding forward. The battery pack 22 can be used repeatedly by removing it from the battery mounting section 21 and charging it with a separately prepared charger. The battery pack 22 can also be used as a power source for other power tools, such as a rechargeable screwdriver or cutting tool.

As shown in FIG. 5, the main body 10 has a driver return mechanism 30 and an impact mechanism 40 housed within the main body housing 11. The impact mechanism 40 includes a driver base 42 that supports the impact driver 3, and an impact spring 43 that urges the driver base 42 in the driving direction (forward). A compression coil spring with a relatively large wire diameter and winding diameter is used for the impact spring 43. The impact driver 3 is a long, thin plate material that is constantly inserted into the driving passage 2a in a state where it can move forward and backward without rattling. The rear of the impact driver 3 is connected to the top of the driver base 42 via a connecting pin 3a.

As shown in FIG. 5, the main housing 11 is provided with a round bar-shaped support shaft 41. The support shaft 41 extends over almost the entire length of the main housing 11 from the front to the rear. The impact spring 43 is interposed around the support shaft 41. The driver base 42 is supported so that it can slide freely back and forth relative to the main housing 11. The driver base 42 is supported in a state in which the displacement around the axis of the support shaft 41 is restricted. The impact spring 43 is interposed between the driver base 42 and the rear of the main housing 11 in the front-rear direction. The driver base 42 and the impact driver 3 are biased in the driving direction by the impact spring 43. Due to the biasing force of the impact spring 43, a single driving tool T supplied into the driving passage 2a is struck by the impact driver 3 and driven out from the ejection port 4a.

As shown in FIG. 5, a forward end damper 45 is provided at the front of the main housing 11. The forward end damper 45 has a cylindrical shape and is arranged around the support shaft 41. The forward end damper 45 absorbs impact at the forward end position of the driver base 42 moving in the driving direction. A cylindrical retaining sleeve 44 is arranged at the rear of the main housing 11. The retaining sleeve 44 is arranged on the inner periphery of the rear of the impact spring 43. The retaining sleeve 44 prevents the impact spring 43 from bending or becoming trapped due to deformation when it is in a contracted state.

As shown in FIG. 5, the first engagement receiving portion 35 and the second engagement receiving portion 36 are provided on the underside of the driver base portion 42 of the impact mechanism 40 and protrude downward. Although not shown in detail in the figure, the first engagement receiving portion 35 and the second engagement receiving portion 36 extend a predetermined length in the left-right direction. The first engagement receiving portion 35 is disposed a certain distance rearward of the second engagement receiving portion 36. The amount by which the first engagement receiving portion 35 protrudes downward is greater than the amount by which the second engagement receiving portion 36 protrudes downward. The first engagement receiving portion 35 and the second engagement receiving portion 36 move forward and backward integrally with the driver base portion 42.

As shown in FIG. 5, the electric motor 13 is housed in the motor housing 12 with the motor shaft 13a extending vertically. Above the electric motor 13, a planetary gear train 14 and an output gear 15 are arranged side by side along the motor shaft 13a. The rotational output of the electric motor 13 is reduced in speed by the planetary gear train 14 and output to the output gear 15.

As shown in FIG. 5, the driver return mechanism 30 has one return gear (drive gear) 32 and one idle gear 31. The return gear 32 and the idle gear 31 are supported at the bottom of the main housing 11 so as to be rotatable about the support shafts 32a and 31a, which extend vertically. The support shaft 32a is disposed rearward of the support shaft 31a. The idle gear 31 is engaged with both the output gear 15, to which the rotational output of the electric motor 13 is output, and the return gear 32. The idle gear 31 is a so-called idle gear that transmits the rotational output of the output gear 15 to the return gear 32 without increasing or decreasing it. Therefore, the reduction ratio of the return gear 32 is determined by the gear ratio with the output gear 15. In addition, the rotation direction of the return gear 32 is the same as that of the output gear 15 because one idle gear 31 is interposed.

As shown in FIG. 5, the upper surface of the return gear 32 is provided with a first engaging portion 33 and a second engaging portion 34. The first engaging portion 33 and the second engaging portion 34 are cylindrical protrusions of approximately the same diameter, each protruding upward. The amount of upward protrusion of the first engaging portion 33 is approximately half that of the second engaging portion 34, which is lower. In other words, the first engaging portion 33 protrudes at a height that allows it to engage with the first engaging receiving portion 35 but not with the second engaging receiving portion 36. The second engaging portion 34 protrudes at a height that allows it to engage with both the first engaging receiving portion 35 and the second engaging receiving portion 36. The first engaging portion 33 and the second engaging portion 34 are arranged with a shift in the rotational direction around the support shaft 32a. The interval in the rotational direction between the first engaging portion 33 and the second engaging portion 34 is appropriately set depending on the timing of engagement with the first engaging receiving portion 35 or the second engaging receiving portion 36.

The operation of the impact driver 3 by the impact mechanism 40 and the driver return mechanism 30 will be described. Figure 5 shows the state immediately after the impact driver 3 reaches the forward end position due to the biasing force of the impact spring 43 and the driving tool T is driven into the workpiece W by the impact driver 3. The electric motor 13 is started by turning on the microswitch 6 and pulling the switch lever 17 to turn on the switch body 18. The microswitch 6 is turned on by bringing the driving nose part 2 as a contact arm into contact with the workpiece W and retracting it. When the microswitch 6 and the switch body 18 are turned on, power supply to the electric motor 13 is started. This causes the driver return mechanism 30 to start operating.

When the electric motor 13 is started, the return gear 32 starts to rotate. The rotation of the return gear 32 presses the first engagement portion 33 against the front surface of the first engagement receiving portion 35. As a result, the driver base portion 42, which is integral with the first engagement receiving portion 35, is displaced backward against the biasing force of the impact spring 43. As a result, the impact driver 3, which is integral with the driver base portion 42, is returned to the retracted end position.

When the return gear 32 further rotates, the first engagement portion 33 moves away from the front surface of the first engagement receiving portion 35. Meanwhile, the second engagement portion 34 is pressed against the front surface of the second engagement receiving portion 36. As a result, the drive source for the return operation caused by the rotation of the return gear 32 is transferred from the first engagement portion 33 to the second engagement portion 34. As a result, the second engagement receiving portion 36 and the driver base portion 42 continue to move backward against the biasing force of the impact spring 43.

When the driver base 42 reaches the retracted end position, the microswitch 7 is pressed by the retracting first engagement receiving portion 35 and turned on. After the microswitch 7 is turned on, the power supply to the electric motor 13 is cut off and the electric motor 13 stops. When the electric motor 13 stops, the return gear 32 stops. Therefore, the displacement of the first engagement portion 33 and the second engagement portion 34 stops. As a result, the driver base 42 and the impact driver 3 stop at the retracted end position (initial position).

With the driver base 42 and the impact driver 3 in their initial positions, the driving nose 2 is placed against the workpiece W to turn on the microswitch 6, and the switch lever 17 is pulled to turn on the switch body 18. This starts the electric motor 13 and rotates the return gear 32. This causes the second engagement portion 34 to move away from the second engagement receiving portion 36. This cuts off the power that returns the driver base 42 to the retreat end position against the biasing force of the impact spring 43. This causes the driver base 42 to move forward due to the biasing force of the impact spring 43, and the impact driver 3 to move forward in the driving passage 2a. Thus, the driving tool T in the driving passage 2a is struck by the advancing impact driver 3 and driven into the workpiece W.

As shown in Figs. 1 and 3, a lighting device 55 is provided at the left front end of the main body 10. The lighting device 55 is provided at the lower part of the main body 10 to which the motor housing part 12 is connected. Therefore, the lighting device 55 is provided below the emission part 4. The lighting device 55 has, for example, a light emitting diode (LED) as a light source. The LED of the lighting device 55 is electrically connected to the battery pack 22 attached to the battery attachment part 21. The LED emits light when power is supplied from the battery pack 22. The lighting device 55 irradiates light forward.

Figure 3 shows a schematic diagram of the wiring 56 that supplies power from the battery pack 22 to the lighting device 55. The wiring 56 electrically connects the lighting device and the battery attachment section 21 via the controller 23. The wiring 56 is arranged, for example, from the power supply section 20 through the inside of the grip section 16 and the main body housing 11. In this way, the wiring 56 can be conveniently arranged inside the main body housing 11, grip section 16, etc. that the driving tool 1 normally has, without adding any new structure.

The lighting device 55 is electrically connected to the battery pack 22, the controller 23, the switch body 18, etc. (see FIG. 5). The lighting device 55 is turned on when the user pulls the switch lever 17 to turn on the switch body 18. When the lighting device 55 is turned on, it is supplied with power from the battery pack 22 and automatically lights up. When the driver base 42 reaches the retracted end position by the driver return mechanism 30, the microswitch 7 is turned on and the electric motor 13 is stopped. The controller 23 stops the power supply from the battery pack 22 to the lighting device 55 a certain time after the electric motor 13 is stopped. This causes the lighting device 55 to automatically turn off.

As shown in Figures 1 and 2, the magazine 51 has a box-shaped rectangular magazine body 52 and a door 53 that can be opened and closed relative to the opening of the magazine body 52. The magazine body 52 is box-shaped with an opening on the left side. Therefore, the door 53 is provided on the left side of the magazine body 52. A rail 52a extending in the vertical direction is provided at the rear of the opening of the magazine body 52. A rail groove 52b extending parallel to the rail 52a is provided at the front of the opening of the magazine body 52. A rail groove 53a extending in the vertical direction is provided at the rear of the door 53. A rail 53b extending parallel to the rail groove 53a is provided at the front of the door 53.

As shown in Figs. 1 and 2, rail 52a and rail groove 53a, and rail groove 52b and rail 53b are engaged with each other so that they can be displaced up and down. Therefore, door 53 can slide up and down along rail 52a and rail groove 52b. By sliding door 53 downward, magazine body 52 opens and driving tool T (see Fig. 5) can be loaded. By sliding door 53 upward to the closed position, magazine body 52 closes. Magazine body 52 is made of an opaque resin material. Door 53 is made of a transparent resin material such as polycarbonate or acrylic. Therefore, door 53 also functions as a window through which driving tool T (see Fig. 5) housed in magazine body 52 can be seen from the outside.

As shown in FIG. 3, a light guide material 54 is provided on the left side (outer side) of the door 53. The light guide material 54 is made of the same transparent resin material as the door 53, such as polycarbonate or acrylic, and is provided integrally with the door 53. The light guide material 54 is rectangular and extends in the front-rear direction along the outer side of the door 53. The light guide material 54 is slightly inclined upward from the rear to the front. The light guide material 54 has a light entrance portion 54a at its rear end and an illumination portion 54b at its front end. The light entrance portion 54a of the light guide material 54 is located behind the rear end of the door 53. The illumination portion 54b is located at approximately the same position as the front end of the door 53 in the front-rear direction. In other words, the light guide material 54 is provided in the area between the lighting device 55 and the emission portion 4 in the front-rear direction.

As shown in FIG. 3, the light entrance portion 54a is located immediately in front of the lighting device 55 when the door 53 is in the closed position. In this state, the light entrance portion 54a covers almost the entire light-emitting surface of the lighting device 55. Therefore, most of the light emitted by the lighting device 55 enters the light entrance portion 54a. The light entering from the light entrance portion 54a travels along the longitudinal direction of the light-guiding material 54. The light passing through the light-guiding material 54 travels toward the forward illumination portion 54b with almost no leakage to the sides of the light-guiding material 54.

As shown in Figures 4 and 6, the end face of the irradiation section 54b is formed as an inclined surface 54c that is inclined in the direction perpendicular to the surface toward the emission section 4. The inclined surface 54c is inclined from right to left from the rear to the front, and is also inclined from top to bottom from the rear to the front. The inclined surface 54c is flat and perpendicular to the line connecting the irradiation section 54b and the emission section 4. As a result, the light that exits from the inclined surface 54c to the outside of the light-guiding material 54 is generally aligned in the irradiation direction toward the emission section 4.

As shown in Figures 6 and 7, the light emitted from the irradiation unit 54b is emitted from near the front end of the door 53 toward the ejection unit 4. This prevents the door 53 and the magazine body 52 from casting a shadow on the ejection unit 4. When the irradiation area L of the emitted light is shown in a schematic diagram, it has a relatively wide, roughly circular shape that illuminates the ejection unit 4 and the material W to be driven around the ejection unit 4. The area around the ejection unit 4 is illuminated roughly evenly whether viewed from the left or right side of the driving tool 1.

10 shows a driving tool 70 of a first comparative example, which is to be compared with the driving tool 1. The driving tool 70 is provided with a lighting device 74 at the left front part of the main body 10, similar to the lighting device 55 (see FIG. 6) of the driving tool 1. The magazine 71 of the driving tool 70 has a box-shaped rectangular magazine body 72 and a door 73 that can slide up and down to the left of the magazine body 72. However, unlike the door 53 (see FIG. 6), the door 73 does not have a light-guiding material. Therefore, the light emitted from the lighting device 74 is blocked by the door 73 or the magazine body 72, and a shadow is cast in the right area. Therefore, when the illumination area L of the lighting device 74 is diagrammatically shown, it is an approximately semicircular shape that illuminates the left area of the emission part 4. Therefore, the visibility of the right area of the emission part 4 is not good.

As described above, the driving tool 1 has an impact mechanism 40 that strikes the driving tool T, and a main body 10 equipped with the impact mechanism 40. The driving tool 1 further has an ejection section 4 from which the driving tool T struck by the impact mechanism 40 is ejected. An illumination device 55 is provided on the main body 10. A light-guiding material 54 is provided in the area from the illumination device 55 to the ejection section 4.

Therefore, the wiring 56 that supplies power to the lighting device 55 can be conveniently arranged in the main body 10. This makes it easy to assemble the lighting device 55 and the wiring 56 to the main body 10. Furthermore, the light emitted by the lighting device 55 is guided to the vicinity of the emission part 4 by the light-guiding material 54. This allows the light to be widely irradiated from the tip of the light-guiding material 54 to the periphery of the emission part 4. Furthermore, light diffusion and reduction in the amount of light in the area from the lighting device 55 to the emission part 4 can be prevented.

The driving tool 1 also has a magazine 51 that supplies driving tools to the impact mechanism 40. The lighting device 55 is provided in front of the main body 10 in the driving direction. The light guide material 54 is provided in the magazine 51. Therefore, the light guide material 54 can connect the light source of the lighting device 55 to the emission unit 4 via the shortest route or an approximately shortest route. This reduces the loss of light reaching the emission unit 4.

The magazine 51 is a box-shaped body extending in the driving direction and in a direction perpendicular to the driving direction. The magazine 51 has a magazine body 52 that stores the driving tool T, and a door 53 that is provided so as to be able to open and close relative to the magazine body 52. The light guide 54 is provided on the door 53. For example, a user holding the driving tool 1 with his/her right hand looks at the place where the driving tool T is to be driven from the left to the right of the driving tool 1. The door 53 is provided on the left side of the magazine body 52, taking into consideration that the driving tool 1 is held with the right hand. Therefore, the light passing through the light guide 54 irradiates the periphery of the emission part 4 from the left to the right. Therefore, the user's line of sight and the irradiation direction of the light are generally the same direction. This improves the visibility of the place where the driving tool T is to be driven on the material W to be driven.

The light-guiding material 54 also extends along the outer periphery of the magazine 51, which supplies the driving tool T to the striking mechanism 40. Therefore, the light-guiding material 54 is adjacent to the outer periphery of the magazine 51 in a long region along the extension direction. Therefore, the light-guiding material 54 is stably supported by the magazine 51. This stabilizes the direction of light emitted from the lighting device 55 through the light-guiding material 54.

In addition, the light-guiding material 54 is formed as a single part together with the door 53 of the magazine 51. This reduces the number of parts and the number of assembly steps. In addition, there is no need to attach any mounting parts around the light-guiding material 54. This allows the area around the light-guiding material 54 to be compact.

The light-guiding material 54 also has an irradiation section 54b at its tip in the forward direction of irradiation. The irradiation section 54b has an inclined surface 54c that is inclined so that the direction perpendicular to the surface faces the emission section 4. Therefore, light is irradiated from the irradiation section 54b in the direction perpendicular to the surface of the inclined surface 54c. Therefore, the light is irradiated in a concentrated manner near the emission section 4. This improves the irradiation efficiency of the emission section 4.

The driving tool 1 also has a battery attachment section 21 to which a battery pack 22 can be attached and detached as a power source for the impact mechanism 40. The lighting device 55 is supplied with power from the battery pack 22 via a wire 56. Therefore, the battery pack 22 can be used as a power source for operating the impact mechanism 40 without providing a separate power source for the lighting device 55.

The illumination of the lighting device 55 is automatically switched on and off in conjunction with the driving of the impact mechanism 40. Therefore, the lighting device 55 automatically turns on when the user pulls the switch lever 17, for example, before the driving tool T is driven into the hole. The lighting device 55 turns off after the driving tool T is driven into the hole. Therefore, the user can use the driving tool 1 without having to switch the lighting device 55 between the on and off states. This improves the operability of the driving tool 1.

Next, a driving tool 60 according to a second embodiment of the present disclosure will be described with reference to FIGS. 8 and 9. The driving tool 60 includes a magazine 61 and a lighting device 65 instead of the magazine 51 and the lighting device 55 of the driving tool 1 of the first embodiment shown in FIG. 1. The magazine 61 includes a light guide 64 on the right side. The lighting device 65 is provided at the lower part of the right front end of the main body 10. The lighting device 65 is electrically connected to the battery pack 22 attached to the battery attachment part 21. The lighting device 65 includes, as a light source, an LED that emits light forward. The light guide 64 and the lighting device 65 are provided at positions approximately symmetrical to the light guide 54 and the lighting device 55 shown in FIG. 6 in the left-right direction.

As shown in FIG. 8, the magazine 61 has a rectangular box-shaped magazine body 62 that is open on the left side, and a door 63 that can be opened and closed vertically on the left side of the magazine body 62. The magazine body 62 is box-shaped with an opening on the left side. The magazine body 62 is made of an opaque resin material. The door 63 may be made of a transparent resin material, or may be made of an opaque resin material like the magazine body 62.

As shown in FIG. 9, the light guide 64 is a rectangular column and extends forward and backward along the right side surface of the magazine body 62. The light guide 64 is made of a transparent resin material such as polycarbonate or acrylic. That is, the light guide 64 is made of a resin material different from that of the magazine body 62. Therefore, the light guide 64 is fixed to the right side surface of the magazine body 62, for example, with an adhesive. The light guide 64 has a light entrance portion 64a at the rear end and an irradiation portion 64b at the front end. The light entrance portion 64a of the light guide 64 is located behind the rear end of the magazine body 62. The irradiation portion 64b is located at approximately the same position as the front end of the magazine body 62 in the forward and backward direction. In other words, the light guide 64 is provided in the area between the illuminator 65 and the emission portion 4 in the forward and backward direction.

As shown in FIG. 9, the light entrance portion 64a is disposed immediately before the lighting device 65. Most of the light emitted by the lighting device 65 enters the light entrance portion 64a. The light entering from the light entrance portion 64a proceeds along the longitudinal direction of the light guide material 64 toward the forward irradiation portion 64b with almost no leakage to the sides of the light guide material 64. The end face of the irradiation portion 64b is formed as an inclined surface 64c whose surface perpendicular direction is inclined toward the emission portion 4. The inclined surface 64c is inclined from left to right from the rear to the front, and is inclined from top to bottom from the rear to the front, and is substantially planar. As a result, the light exiting the light guide material 64 from the inclined surface 64c has a generally uniform irradiation direction toward the emission portion 4.

As shown in Figures 8 and 9, the light emitted from the irradiation unit 64b is emitted from near the front end of the magazine body 62 toward the ejection unit 4, which prevents the magazine body 62 from casting a shadow on the ejection unit 4. When the irradiation area L of the emitted light is shown in a schematic diagram, it has a relatively wide, approximately circular shape that illuminates the ejection unit 4 and the workpiece W around the ejection unit 4. The area around the ejection unit 4 is illuminated approximately evenly when viewed from either the left or right side of the driving tool 1.

Figure 11 shows a driving tool 80 of a first comparative example, which is compared with the driving tool 60. The driving tool 80 is equipped with a lighting device 84 on the right front part of the main body 10, similar to the lighting device 65 of the driving tool 60 (see Figure 9). The magazine 81 of the driving tool 80 has a box-shaped rectangular magazine body 82. However, unlike the magazine body 62 (see Figure 9), the magazine body 82 does not have a light-guiding material on the side. Therefore, the light emitted from the lighting device 84 is blocked by the magazine body 82, and a shadow is cast in the left area. Therefore, when the illumination area L of the lighting device 84 is diagrammatically shown, it is an approximately semicircular shape that illuminates the right area of the emission part 4. Therefore, the visibility of the left area of the emission part 4 is poor.

As described above, the magazine 61 is box-shaped and extends in the driving direction and in a direction perpendicular to the driving direction. The magazine 61 has a magazine body 62 that contains the driving tool T, and a door 63 that is provided so as to be able to open and close relative to the magazine body 62. The light-guiding material 64 is provided in the magazine body 62. The light-guiding material 64 is therefore provided in the magazine body 62 that is fixed to the main body 10. This stabilizes the position of the light-guiding material 64 relative to the main body 10. This stabilizes the irradiation direction of the light irradiated from the tip of the light-guiding material 64.

Various modifications can be made to the driving tools 1 and 60 of the above-described embodiments. The driving tools 1 and 60 in which the impact mechanism 40 is of a mechanical spring type have been exemplified. Alternatively, for example, a gas spring type driving tool that uses the gas pressure of the gas sealed in the pressure accumulator as the driving thrust can be similarly applied. Also, the present invention can be similarly applied to a flywheel type driving tool that uses the inertial force of a flywheel to eject a driver, or an electro-pneumatic type driving tool that uses compressed air generated by rotating a crank with an electric motor. Also, a driver return mechanism 30 having one idle gear 31 and one return gear 32 has been exemplified. Alternatively, multiple idle gears 31 may be provided, or a configuration without an idle gear 31 may be used. Alternatively, a configuration with multiple return gears and a protruding engagement portion on each return gear may be used.

The light guide material 54, 64 is exemplified as a rectangular columnar light guide. Alternatively, it may be, for example, a columnar light guide, or a polygonal columnar light guide other than a rectangle. The light guide material 54, 64 is exemplified as a transparent resin light guide. Alternatively, it may be, for example, a columnar light guide made of glass. For example, the light guide material 54, 64 may be formed of glass fiber. Although the transparent resin door 53, 63 is exemplified, it may be an opaque resin door 53, 63. The light guide material 54, 64 has a planar inclined surface 54c, 64c at the tip. Alternatively, the inclined surface 54c, 64c may be, for example, a convex lens shape or a concave lens shape. This allows the convergence or divergence of the light irradiating the emission section 4 to be adjusted.

The illustrated wiring 56 runs from the power supply unit 20 through the inside of the grip unit 16 and the inside of the main housing 11. Alternatively, for example, the wiring 56 may run from the power supply unit 20 through the inside of the motor housing 12 and the inside of the main housing 11. An LED is illustrated as the lighting device 55, but instead, for example, a light bulb that emits light when power is supplied from the battery pack 22 may be used.

The initial state of the driving operation, the initial position of the driver base, or the timing of stopping the electric motor, etc., can be set by changing appropriately from the configuration shown in the example. The timing of turning on and off the lighting devices 55, 65 can also be set by changing appropriately from the configuration shown in the example. For example, the lighting devices 55, 65 may be configured to be turned off a predetermined time after the switch main body 18 is turned on. The driving tools 1, 60 are DC powered by the battery pack 22. Alternatively, the same can be applied to a driving tool powered by an AC power source such as a commercial 100V power source.

T: Driving tool W: Driving material L: Irradiation area 1: Driving tool (rechargeable pin tacker)
2: driving nose portion, 2a: driving passage, 3: impact driver, 3a: connecting pin, 4: injection portion, 4a: injection port, 5: operating arm portion, 6: microswitch (for detecting ON operation of contact arm)
7...Microswitch (for detecting the rear end position of the driver base)
10...Main body portion 11...Main body housing 12...Motor accommodating portion 13...Electric motor, 13a...Motor shaft 14...Planetary gear train 15...Output gear 16...Grip portion 17...Switch lever 18...Switch main body 20...Power supply portion 21...Battery mounting portion 22...Battery pack 23...Controller 30...Driver return mechanism 31...Idle gear, 31a...Support shaft 32...Return gear (drive gear), 32a...Support shaft 33...First engagement Part 34... second engagement part 35... first engagement receiving part 36... second engagement receiving part 40... impact mechanism 41... support shaft part 42... driver base part 43... impact spring 44... retaining sleeve 45... forward end damper 51... magazine 52... magazine body, 52a... rail, 52b... rail groove 53... door, 53a... rail groove, 53b... rail 54... light guide material, 54a... light entrance part, 54b... irradiation part, 54c... inclined surface 55... lighting device (LED)
56... Wiring 60... Driving tool 61... Magazine 62... Magazine body 63... Door 64... Light guide material, 64a... Light entrance portion, 64b... Irradiation portion, 64c... Inclined surface 65... Illumination device (LED)
70: Driving tool 71: Magazine 72: Magazine body 73: Door 74: Lighting device (LED)
80: Driving tool 81: Magazine 82: Magazine body 84: Lighting device (LED)

Claims (9)

A driving tool,
A striking mechanism that strikes the driving tool;
A main body having the impact mechanism;
an ejection section for ejecting the driving tool that has been struck by the striking mechanism;
A lighting device is provided on the main body,
A light guide material is provided in a region from the lighting device to the emission portion,
The light-guiding material has a light-entering section that faces the lighting device and an irradiation section that is arranged near the emission section, and the irradiation section extends in a straight line between the light-entering section and the irradiation section on an extension line of the lighting device and the light-entering section. The driving tool according to claim 1,
a magazine for supplying the driving tools to the striking mechanism;
The lighting device is provided in front of the main body in the driving direction,
The light-guiding material is a driving tool provided in the magazine. The driving tool according to claim 2,
the magazine has a box shape extending in the driving direction and in a direction perpendicular to the driving direction, and includes a magazine body that houses the driving tools, and a door that is provided so as to be openable and closable relative to the magazine body;
The light-guiding material is a driving tool that is provided on the door. The driving tool according to claim 2,
the magazine has a box shape extending in the driving direction and in a direction perpendicular to the driving direction, and includes a magazine body that houses the driving tools, and a door that is provided so as to be openable and closable relative to the magazine body;
The light-guiding material is a driving tool provided in the magazine body. A driving tool according to claim 3 or 4,
The light guide is a driving tool that extends along the outer periphery of the magazine. The driving tool according to any one of claims 3 to 5,
A driving tool, wherein the light guide is formed as a single piece with at least a portion of the magazine. A driving tool according to any one of claims 1 to 6,
The irradiation section is a driving tool having an inclined surface that is inclined so that the direction perpendicular to the surface faces the emission section. A driving tool according to any one of claims 1 to 7,
a battery attachment portion to which a battery serving as a power source for the striking mechanism can be attached and detached;
The lighting device is a driving tool that receives power from the battery. A driving tool according to any one of claims 1 to 8,
The lighting device is a driving tool in which illumination is automatically switched in conjunction with the driving of the striking mechanism.

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